Lanthanide Complexes Based on β-Diketonates and a Tetradentate Chromophore Highly Luminescent as Powders and in Polymers

• DOI: 10.1021/ic402523v
• Publication Date: 2013-11-21T21:27:25Z
• Authors: Eugen S. Andreiadis; Nicolas Gauthier; Daniel Imbert; Renaud Demadrille; Jacques Pécaut; Marinella Mazzanti
• Keywords: Europium; Terbium; Chromophore; Quantum yield; Carboxylate

A new type of octacoordinated ternary β-diketonates complexes terbium and europium has been prepared using the anionic tetradentate terpyridine-carboxylate ligand (L) as a sensitizer lanthanide luminescence in combination with two ligands 2-thenoyltrifluoroacetyl-acetonate (tta–) for Eu3+ trifluoroacetylacetonate (tfac–) Tb3+. The solid state structures [Tb(L)(tfac)2] (1) [Eu(L)(tta)2] (2) have determined by X-ray crystallography. Photophysical 1H NMR indicate high stability these respect to dissociation solution. use leads extension absorption window toward visible region (390 nm) quantum yield complex (Φ = 66(6)%). Furthermore, incorporated polymer matrixes leading highly luminescent flexible layers.